mysql delete数据恢复

前提： 开启binlog、数据库名、操作日期

步骤：找到对应的binlog、解码、将delete翻译为insert

1.查看binlog是否开启

show variables like '%log_bin%';

2.查看数据文件存放路径:bin-log路径

show variables like '%datadir%';

3.找到删除时间段的binlog,翻译为sql

mysqlbinlog --base64-output=decode-rows -v --database=数据库名 --start-datetime="2021-08-19 16:40:00" --stop-datetime="2021-08-19 16:50:00" "D:Program Filesmysql-5.7.34-winx64mysqldbin.000041" > d:mysqllog.sql

4.在生成的 mysqllog.sql 文件同路径下 ，生成将delete翻译为insert的sql文件

linux：
cat mysqllog.sql | sed -n '/###/p' | sed 's/### //g;s//*./,/g;s/DELETE FROM/;INSERT INTO/g;s/WHERE/SELECT/g;' |sed -r 's/(@17.),/1;/g' | sed 's/@1=//g'| sed 's/@[1-9]=/,/g' | sed 's/@[1-9][0-9]=/,/g' > mysqllogOK.sql
windows:
在生成的sql文件同目录下，创建.vbs文件，写入如下内容，并双击执行
'==========================
'用VBS实现 MYSQL binglog DELETE转INSERT
'==========================
function replaceregex(patern,str,tagstr)
dim regex,matches
set regex=new regExp
regex.pattern=patern
regex.IgnoreCase=true
regex.global=true
matches=regex.replace(str,tagstr)
replaceregex=matches
end function

'Mysql binlog DELETE转INSERT==========
'VBS打开文本文件
Set oldStream = CreateObject("ADODB.Stream")
oldStream.CharSet = "utf-8"
oldStream.Open
oldStream.LoadFromFile("mysqllog.sql") 'binLog生成的DELETE原日志文件
oldText = oldStream.ReadText()
newText=replace(oldText,"### DELETE FROM", ";INSERT INTO")
newText=replace(newText,"### WHERE", "SELECT")
newText=replace(newText,"###", "")
newText=replace(newText,"@1=", "")
newText=replaceregex("@[1-9]=",newText, ",")
newText=replaceregex("@[1-9][0-9]=",newText, ",")
oldStream.Close
'VBS保存文件
Set newStream = CreateObject("ADODB.Stream")
newStream.Type = 2 'Specify stream type - we want To save text/string data.
newStream.Charset = "utf-8" 'Specify charset For the source text data.
newStream.Open 'Open the stream And write binary data To the object
newStream.WriteText newText
newStream.SaveToFile "mysqllogOK.sql", 2 'DELETE转成INSERT以后的新的SQL文件名
newStream.Close

5.打开生成的sql文件找到相应的insert